Two-factor authentication is a two-step user verification process, or you can say it is a security mechanism that requires two factors/user credentials to pass authentication check. Two-factor authentication provides an extra layer of security by verifying something the user knows (e.g Password), something the user has (e.g Smartphone, Hardware Token) or something the user is (Biometric, Fingerprint) which prevents a web application from attackers and security breaches.

In contrast, Single-Factor authentication typically takes User Id and Password as authentication factors which are not secure enough for applications and can lead to security breaches. One problem with this approach is, the user has to set and remember a strongRead More »